RS 232
IEEE-488
Centronics
Analog in-out/Controls
600V
CAT II
0
I
Fuse inside, 2AF/250V
Voltage 90-250V/47-63Hz/30VA
CE
All inputs m ax. 600V. This
equipm ent m ust be earthed.
Do not rem ove cover. Refer
servicing to qualified personel.
!
Figure 4.2. Spectral M ultim eter Rear Panel
The rear panel shown in figure 4.2 contains the shunt input connector. When not in use, the short
circuit connector must be installed.
On the left hand side of the rear panel are, from top to bottom, the RS-232 interface connector, the
IEEE-488 interface connector, the centronics printer connector, and the analog in- and output
connector.
To the far left is the power line cord connector for 50/60Hz line voltages in the range 85V to
265V.
4.2.
ADJUSTING THE OPTIMAL VIEWING ANGLE
Operating the Spectral Multimeter on a table you may want to tilt the instrument. This can be done
by rotating forward the stand-offs at the bottom plate.
4-2
4-3
4.3. LINE
POWER
WARNING
To avoid shock hazard, connect the Spectral Multimeter line cord to a receptacle with earth
ground.
Plug the line cord into the connector on the rear of the instrument. It will operate on any line
voltage between 85V ac and 265V ac without adjustment, and any frequency between 50 and
400Hz.
4.4.
TURNING THE SPECTRAL MULTIMETER ON
To turn the instrument on activate the power line switch located near the power receptacle on the
rear panel.
When the instrument is turned on the display is set to its start-up configuration with all values set
to zero for about 2 seconds while the instrument performs an internal self test. After this self test
the instrument assumes its initial setting. The initial setting is determined by the instrument setting
recall number 00 to 20. It is factory set to recall number 00 which assumes the following state:
The first line of the display number field shows the RMS current and the RMS voltage. The
second line shows power and frequency of current, and the third line shows apparent power and
power factor.
The fourth and fifth lines are graphic area. At start-up the harmonic bar graph of current is
displayed. The horizontal scale is numbered referring to the harmonics of current (N=0 is the DC
component) and the vertical scale gives the magnitudes of the harmonics of mA or A.
4.5
USING THE FUNCTION KEYS
The two key control fields below the display contain 11 keys. The top row is the menu control
field and below is the cursor control field.
The basic use of the two key control fields is as follows:
The
cursor key control field
is used to move the cursor to the desired position on the display.
Pressing the
SET-key
means that you want to modify this position; this can be a position to the
very left of the display (annunciator field) such as 5A/30A input selection, or current range- or
voltage range selection, or synchronisation to I or U (current or voltage of phase L1), or selection
of averaging time or selection of measurement mode.
When you move the cursor to the display number field the display can be reconfigured, that is,
you can place at the selected position a different quantity.
Содержание SM201
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